Do you often hear customers ask, which is better between your high-pressure anti-wear hydraulic oil and ashless anti-wear oil? I use high pressure anti-wear hydraulic oil for my equipment, do I need ashless anti-wear hydraulic oil? What is the difference between ashless anti-wear oil and high-pressure anti-wear hydraulic oil? Today, I specially found a senior engineer with 30 years of experience to talk about ashless anti-wear fluid oil and high-pressure anti-wear hydraulic oil.
First of all, let's understand how the anti-wear hydraulic oil is qualitative: Anti-wear hydraulic oil is composed of refined mineral oil as Base Oil, plus various additives, such as: anti-wear agent, antioxidant, rust inhibitor, Anti-foaming Agent and other additives. For anti-wear hydraulic oil, then Anti-wear additives are prominent.
China's anti-wear hydraulic oil viscosity grades are divided into eight types: 10#, 15#, 22#, 32#, 46#, 68#, 100#, 150#, etc. The commonly used anti-wear hydraulic oil viscosity grades are 32#, 46 #, 68# three. Anti-wear Hydraulic Oil Additive system is divided into ash (zinc) formula and ashless formula.
What is the difference between ash, low ash and ashless anti-wear hydraulic oil? Anti-wear hydraulic Oil Additive system is divided into ash high pressure (zinc) formula and ashless formula Ash type is: zinc-containing main additive ZDDP zinc dialkyldithiophosphate, standard is 0.03% zinc content in oil. Low ash type: zinc content is less than 0.03%. The ashless type is: free of zinc and other metal salts. The advantage of the ashless type is that it does not contain zinc and will not react with silver parts. Because many parts such as valves are made of silver-plated materials, the zinc element will react with silver to replace the silver and destroy the parts. Which is better, high pressure anti-wear hydraulic oil or ashless anti-wear oil? Ashless hydraulic oil is mainly because it does not contain additives of zinc components, which prevent corrosion of silver hydraulic components. Ashless hydraulic oil is suitable for hydraulic systems with servo valve regulation to keep pressure stable, because servo valve requires hydraulic oil to maintain high filtration and cleanliness; it is also suitable for environments in close contact with water, with little pollution to water bodies. If the hydraulic system does not consider the above factors, it is better to use zinc-containing high-pressure anti-wear hydraulic oil. Zinc is an anti-wear agent, which can strengthen the anti-wear effect of hydraulic oil, reduce wear and the price is lower than that of ashless hydraulic oil.
